编译时不显示令牌信息 [英] Token information does not show when compiled

问题描述

我正在使用下面的代码创建一个智能协定，它接收BNB并将协定创建的令牌发回。

我正在使用Remix，并选择要编译的DEX协定。

但是，当我执行此操作时，令牌信息不会显示在BscScan上。

示例：https://testnet.bscscan.com/token/0xb570E6Fff85CBE695c9394bDa7d55fb38a009A28

而且我也无法将其添加到我的钱包中，它显示令牌码无法识别它。

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IERC20 {

    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);

    function transfer(address recipient, uint256 amount) external returns (bool);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);


    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);

}


contract ERC20Basic is IERC20{

    string public constant name = "ByeSeel";
    string public constant symbol = "BYS";
    uint8 public constant decimals = 18;


//event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
//event Transfer(address indexed from, address indexed to, uint tokens);


mapping(address => uint256) balances;

mapping(address => mapping (address => uint256)) allowed;

uint256 totalSupply_ = 10000000 * 10 ** 18;

using SafeMath for uint256;

constructor() {
    balances[msg.sender] = totalSupply_;
}

function totalSupply() public override view returns (uint256) {
    return totalSupply_;
}

function balanceOf(address tokenOwner) public override view returns (uint256) {
    return balances[tokenOwner];
}

function transfer(address receiver, uint256 numTokens) public override returns (bool) {
    require(numTokens <= balances[msg.sender]);
    balances[msg.sender] = balances[msg.sender].sub(numTokens);
    balances[receiver] = balances[receiver].add(numTokens);
    emit Transfer(msg.sender, receiver, numTokens);
    return true;
}

function approve(address delegate, uint256 numTokens) public override returns (bool) {
    allowed[msg.sender][delegate] = numTokens;
    emit Approval(msg.sender, delegate, numTokens);
    return true;
}

function allowance(address owner, address delegate) public override view returns (uint) {
return allowed[owner][delegate];
}

function transferFrom(address owner, address buyer, uint256 numTokens) public override returns (bool) {
require(numTokens <= balances[owner]);
require(numTokens <= allowed[owner][msg.sender]);

balances[owner] = balances[owner].sub(numTokens);
allowed[owner][msg.sender] = allowed[owner][msg.sender].sub(numTokens);
balances[buyer] = balances[buyer].add(numTokens);
emit Transfer(owner, buyer, numTokens);
return true;
}

event Received(address, uint);
 receive() external payable {
 emit Received(msg.sender, msg.value);
}

}

library SafeMath {
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
  assert(b <= a);
  return a - b;
}

function add(uint256 a, uint256 b) internal pure returns (uint256) {
   uint256 c = a + b;
   assert(c >= a);
   return c;
} }

contract DEX {

    event Bought(uint256 amount);
    event Sold(uint256 amount);


    IERC20 public token;

    constructor() {
        token = new ERC20Basic();
    }

    function buy() payable public {
        uint256 amountTobuy = msg.value;
        uint256 dexBalance = token.balanceOf(address(this));
        require(amountTobuy > 0, "You need to send some Ether");
        require(amountTobuy <= dexBalance, "Not enough tokens in the reserve");
        token.transfer(msg.sender, amountTobuy);
        emit Bought(amountTobuy);
    }

    function sell(uint256 amount) public {
        require(amount > 0, "You need to sell at least some tokens");
        uint256 allowance = token.allowance(msg.sender, address(this));
        require(allowance >= amount, "Check the token allowance");
        token.transferFrom(msg.sender, address(this), amount);
        payable(msg.sender).transfer(amount);
        emit Sold(amount);
    }

    receive() external payable {
    buy();
    }

}

DEX

问题是推荐答案合同没有扩展到ERC20Basic合同 所以我不得不这样做： 合同DEX为ERC20Basic 这解决了问题，但我在买卖合同上仍然有问题。

这篇关于编译时不显示令牌信息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！